Finding the Fourth Proportional to 138,977.20, 208,465.80 and 124,202.80
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Solution
The fourth proportional to 138,977.20, 208,465.80 and 124,202.80 is: 186,304.20
Step by Step Solution
- Step 1: Write the proportion equation
138,977.20 : 208,465.80 = 124,202.80 : x - Step 2: Convert to fraction form
138,977.20/208,465.80 = 124,202.80/x - Step 3: Cross multiply
138,977.20x = 208,465.80 × 124,202.80 - Step 4: Simplify right side
138,977.20x = 25,892,036,064.24 - Step 5: Solve for x
x = 25,892,036,064.24/138,977.20 - Step 6: Final answer
x = 186,304.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.